FAQ

Short answers to common questions. For a walk-through of your first session, see Getting started.

About MemGym

Is this another flashcard app?

It works like one, with one extra step. You can bring flashcards from Anki or a spreadsheet, or write your own, and practise them much as you're used to. The difference is what gets measured. Before each card you say how sure you are, and after it you score how it went. MemGym tracks the gap between the two, so you can see where your confidence is off.

Cards can also be more than facts to recall. Besides Q&A, there are plans (if–then), habits you want to check yourself against (assertions), situations to rehearse (scenarios) and questions about yourself (reflections). The Writing cards guide covers each kind.

Where do cards come from?

Three places, and you can mix them:

• A starter collection, added during setup or later from Cards → Collections. Each is your own copy.
• An import from Cards → Import / export: a CSV, Excel or Anki file. See Importing from Anki.
• Your own, from Cards → + Add cards. See the Writing cards guide.

What do the thumbs mean?

In ⚙ Settings → Scoring style you can swap the words (Missed, Partial, Nailed) for thumbs: 👎 👈 👍. They mean the same as Low, Medium and High before you look, and Missed, Partial and Nailed after.

The thumb isn't a grade of whether you remembered. MemGym compares it with your prediction, and the gap between the two is what counts.

Your data

Where is my data stored?

On our server, which runs on Amazon Web Services in the US. Your cards, your predictions and scores, and a log of changes to your cards are kept in a database on an encrypted disk. Pictures and sound on your cards are kept in private Amazon storage.

Because it's on the server, your cards and history are the same on every device you sign in on, and clearing your browser doesn't lose them. Your settings are the exception: they stay in the browser you set them in.

Who can see my cards?

Only you, through your account. One account can't read another's cards, history or media. If you make a collection public, people can see its cards, but never your predictions, scores or history.

MemGym's administrators can see each account's email, the date it joined and how many cards it has. Because they run the server, they could reach the database itself. They don't look at your cards or history unless you ask them to, for example to fix a problem you report.

There are no analytics, no ads, no tracking and no third-party scripts in the app. Like any website, the server keeps ordinary access logs (your IP address and the page you asked for) to run the site and protect it from abuse. The only cookie is the one that keeps you signed in.

Is any of my data sent to an AI?

No. MemGym's AI drafting is switched off, so nothing you write is sent to an AI service. If that changes, this page will say so, and name the service, first.

If you connect your own AI agent to your cards (see below), that agent can read your cards because you allowed it.

Do I need an account?

Yes. Accounts are by invitation for now. Join the waitlist on the home page, and when a place opens you'll get an email with a sign-in link. That first link lasts 7 days.

There's no password. To sign in, go to Sign in and enter your email. We email you a 6-digit code and a link. Either type the code on the sign-in page, or open the link and press Sign in on the page it opens. The code is handy when you read your email on a different device, or when you use MemGym from your home screen. The code and link work once and expire after 15 minutes. You stay signed in on that device for 30 days, and that renews while you keep using it. If the email is slow, wait a few minutes before asking for another.

Lost a phone, or signed in on someone else's computer? Settings → Sign out of all devices signs you out everywhere except the device you're using, and disconnects any AI agent you've connected.

Emails are sent through Amazon's email service.

Can I download my cards?

Yes. In Cards → Import / export, Download JSON saves every card with its full practice history. Download CSV and Download Excel save the cards themselves, which is handy for editing in a spreadsheet. Pictures and sound aren't inside the download; it records which card each one belongs to.

Importing a file adds its cards without their practice history, so a download is a copy for you to keep, not a way to restore your history.

Can I lose my cards?

Not by clearing your browser or changing devices. Sign in again and they're there.

Three things can lose work:

• Deleting a card is permanent, and deletes its practice history too.
• Reset calibration (in Cards → Import / export) permanently deletes all your predictions and scores. Your cards stay.
• A change that never reached the server. If your connection drops, MemGym keeps trying to save, and you'll see "N changes not yet saved". If it gives up, the message says the changes failed to save, and reloading then would lose them. Wait until you're back online and the message clears.

Can I delete my account?

Yes. Open Settings (the ⚙ at the top), and at the bottom tap Delete my account…, then type the email you sign in with to confirm. Your account is deleted straight away, with your cards, predictions, collections, pictures and sound, and your public pages. It can't be undone, so if you want a copy, download your cards first in Cards → Import / export.

If you shared a public collection and someone added it to their own deck, their copy is theirs and stays.

Practice

How often should I practise?

Little and often works better than one long session. MemGym brings each card back on a schedule: sooner if you missed it, later if you got it. Practising when cards are due keeps that schedule working.

Early on, the main thing is to get each card through once, so there's something to measure.

What's a good calibration score?

Calibration error is the average gap between how sure you were and how it went, as a percentage. 0% would mean every prediction matched.

There isn't a target number. Two things are more useful than the headline:

• Which way you lean. Confidence bias on the Progress page says whether you tend to be overconfident or underconfident.
• Where it's worst. The Progress page breaks your error down by context tag, so you can see which situations your confidence is least reliable in.

With only a few predictions the numbers jump around. They settle as you make more.

I'm usually overconfident. What can I do?

That's a common finding in calibration research, and the Progress page is showing it to you. Some things to try:

• Slow down before you predict. Ask yourself whether you've actually done this recently, not whether it feels familiar.
• For plans (if–then cards), only predict High if you've actually carried the plan out when the moment came, not just because you remember it.
• Look at Where it's worst on the Progress page, and write more specific cards for those situations.
• Don't predict low just to lower the number. The aim is an honest prediction, not a small error.

Where are the stats for one card?

On a card, tap ⓘ details, then open full page →. The card's own page shows your predictions against how it went, rep by rep, and whether the gap is closing. You can also edit the card there, retire it (take it out of practice for good, keeping its history), or delete one you wrote.

Can I use MemGym with an AI agent?

Yes. This is separate from MemGym's own AI drafting, which is switched off. If you use an AI tool that supports MCP, such as Claude or Claude Code, you can give it access to your cards. It can then read your cards, add new ones, and record practice with you. You approve it once in your browser.

It still has to record your prediction as well as your score for every rep. Connecting an agent covers the setup.

Troubleshooting

Practise says "Nothing due"

You've practised everything that's due, and the rest are scheduled for later. You can:

• Add more from your backlog (Cards → Backlog).
• Write a new card (Cards → + Add cards).
• Tap practise all again. It brings back every card you've practised so far, ignoring the schedule, and keeps all your history.

To have one more go at a single card, tap Practise this again under its result. It puts that card first the next time you practise.

I imported cards but can't find them

CSV, Excel and Anki .txt imports go straight into practice. The message says how many ("Imported N cards"), and Go to feed → takes you to them.

An Anki .apkg deck goes into your backlog instead (Cards → Backlog), where you choose what to add to practice.

If you imported a CSV or Excel file and fewer cards arrived than you expected, check its first row. It must be a header row that names the columns, and one of them must be prompt. type, context, answer and scienceNote are optional. A row with nothing in the prompt column is skipped. A CSV you download from MemGym makes a good template.

Can I edit a card?

Yes, any card, including imported ones. On the card, tap ⓘ details, then edit card. It is also on the card's full page. You can change the question, the answer and the comments, and add pictures and sound.

Your practice history on the card is kept. If you've changed what the card asks, tick Start this card's practice history again, and its old predictions are deleted.

The page is blank or slow

"Loading your deck…" means your cards are on their way from the server, which can take a few seconds on a slow connection.

If it stays blank, check you're still signed in (the menu shows Sign in if you're not) and that you're online, then reload.